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Old 31st January 2011, 08:47 PM   #1
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Default Wireless World valve articles from the past

You might be interested to know that I have just opened a Wireless World archive page on my website. The articles are old enough to be out of copyright, and so inevitably are focused on valve technology. The first item is a 1957 article on transformerless valve amplifiers.


See it here: The Wireless World Archive


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Old 31st January 2011, 09:20 PM   #2
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That's great, Douglas. Very much appreciated. Thanks.

..Todd
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Old 31st January 2011, 09:21 PM   #3
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Thankyou, Douglas for an interesting WW article that I haven't got (my earliest WW dates from 1962)
While we're here, thanks also for "The Baxandall Papers", pure-gold.
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Old 1st February 2011, 06:53 AM   #4
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Nice one, Doug.
Incidentally I lent my copy of your excellent book (amp design) to someone a little while ago, and I don't remember who and it hasn't come back, boo hoo.
Do you ever visit the Tonbrigdeaudiojumble?
Regards
Henry
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Old 1st February 2011, 07:37 AM   #5
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Valves, Douglas? Impressions gained from reading your own articles in the same Wireless organ left me with the impression that you regarded the thermionic FET as a plaguey anachronism -doomed to a well-earned extinction ere the Millennium turned.

Or have the intervening years softened your heart. Can we expect articles on squeezing the most out of a 2A3, supported by transistor current sources and new ingenuities?
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Old 1st February 2011, 09:15 AM   #6
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Rod, you're dreaming.

..Todd
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Old 1st February 2011, 03:11 PM   #7
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Quote:
Originally Posted by Rod Coleman View Post
Valves, Douglas? Impressions gained from reading your own articles in the same Wireless organ left me with the impression that you regarded the thermionic FET as a plaguey anachronism -doomed to a well-earned extinction ere the Millennium turned.

Or have the intervening years softened your heart. Can we expect articles on squeezing the most out of a 2A3, supported by transistor current sources and new ingenuities?
Softened my heart? You must have the wrong bloke. I think valves are an expensive, inefficient, unreliable, noisy, non-linear and potentially dangerous way to make an amplifier, but apart from that I have nothing against them.

Having said that, I think any bit of amplification technology can be interesting, eg:

Electro-Mechanical amplifiers

or even:

Mechanical Amplifiers.

I am just about to upload a valve amplifier design by Peter Baxandall. Anything written by Peter is worth reading.
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Old 1st February 2011, 03:39 PM   #8
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Non-Linear? You must have the wrong device. compared to bipolar transistor??

Still, here's a kind of glass bottle you may prefer the look of:




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Old 1st February 2011, 03:50 PM   #9
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I certainly agree with expensive.
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Old 1st February 2011, 04:27 PM   #10
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Great!!! TNX Douglas!!!
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